Web application testing tools are essential in order to make sure that the website is going to be error free and contains no execution bugs at all. These tools simulate the usage of numerous users to test the performance of each aspect of the website. This way, you can make sure that when there is traffic on the website, it does not cause execution problems for the users as well as the back end website operators.
There are various testing tools for web applications but the best ones and the most comprehensive ones are as follows:
1 Load test
2 Stress Test
3 Regression Test
4 Endurance Test
5 Agility Test
These testing tools allow you to simulate the execution of the website from all aspects by putting the website under use of thousands of virtual users to make sure that there are no logical errors and that the website applications are all free of any potential bugs.
This particular tool hammers your website with virtual users to increase the online traffic and see if the web application is being able to take the load or not. All the results are analyzed from the user’s perspective.
The load testing tool produces users and bombards the website with traffic and scales down the results. These results are then compared to situations where the website is under heavy traffic as well as low traffic and notes down the differences. The variations help you understand the operational differences under different volumes of users.
This tool creates many virtual scenarios of activity that can occur on the website and all these scenarios are put under simulation by virtual users. An example of such a scenario is where this tool sends in traffic of hundred users on the website and has them click on different links for any web applications simultaneously. The results are tracked down. This user load is increased after every ten minutes but hundred to make sure that the web application functions properly even when user load is high.
The test results are then calculated automatically and represented in the form of bar charts and graphics with appropriate metrics over a given period of time. Some of these metrics are listed below:
5 Number of virtual users: The virtual users that are created by the tool to use the application simultaneously.
6 Requests per second: When the users click on the links on the web application, requests are sent to the main server. These requests are measured per second.
7 Average response time: Once the requests are received at the back end, the time taken to respond to those requests is the average response time.
8 Peak response period: Response time during heavy user traffic.
9 Error percentage: In case there is failure of a successful response, the rate of errors is recorded accordingly.
10 Throughput: Total amount of data being input and output of the web application.
Load testing tools allows you to conduct tests on even different web applications on your website simultaneously. For example, it can create 50% traffic on the games section of a website, 25% on social networking and the rest on chat rooms. This way it conducts a comprehensive traffic test to make sure all links are working perfectly.
Stress testing tools creates adverse virtual situations on the web application to check if it can function properly even at times when the application is put under stress. An example could be over loading the website with user traffic more than it is designed to take.
This website basically stresses the application and tries to terminate it as a result of an error. It keeps increasing the load of the users till the applications fails and a situation of a virtual melt down is created.
Stress tests create a situation where you can find out what the end user of your web application will experience in times when the traffic is abnormally high. This will help you determine the failure points where you can fix your application to perform well in those situations. The knowledge of the failure points allows you to make appropriate fixations to your web application structure. Stress test can then be run again till your application is finally designed to take in all kinds of user loads.
The definition of failure during a stress test can vary in accordance to the nature of web application that is in context. It could be a complete application crash or even a logical error where the application is not programmed correctly. Other examples include not responding to user requests in time and not have a data cache big enough to accept user data.
This tool is very important for web applications that are designed to run businesses or marketing campaigns. Such things aim to attract more users and hence a huge increase in web traffic can be anticipated. Stress tests prepare you to face such situations where new and bigger user base is being created and a sudden increase in usage of your web application is expected. It saves you from a situation where your application fails to support the increasing traffic and crashes down.
In simpler terms, the stress testing tools provides the developers with the ability of putting your application under web scrutiny to make sure it performs perfectly. In case of failure, it gives you a chance to rectify it before the applications goes live to real life users. It also helps you simulate what the user experiences at time of a virtual melt down so that you can work on it accordingly. Appropriate changes and debuggers can then be applied to your web application.
This is another important testing tool that checks if any new changes made to the application in an effort to rectify previous errors have not had an effect on other areas of the application. It identifies any unintended changes that may have occurred because of any changes elsewhere in the web application.
Developers frequently release application updates and new and improved versions. This tools checks whether new coding changes has affected to old ones or not. In other words, it checks if you haven’t lost what was important for what you have newly installed. Regression tests create virtual scenarios that integrate the new codes with the old ones and determine if they are working in synchronization with each other. It checks if there are any functional errors or not as a result of any new change made to the coding of the web application.
Regression testing is a method of developing flexible, time saving and easy to uses automated plans that test both the old and the new codes of your web application.
This test checks the endurance of your memory in accordance to time. The main objective of this test is to identify any possible memory leaks. By increase the number of users, it increases the amount of data going in and out of the system at a particular point. The endurance testing tools whether the memory is substantial enough to take a particular amount of work load at a given point in time. It also helps filter out unnecessary data that might be using up memory of your web application.
The results that are derived from the endurance test are then used to improve the memory cache and design data filters to make sure unnecessary data does not goes in the system.
Endurance test chooses a time period and increases the volume of data flow through the web application. The response of the system is then noted and analyzed. If in case there is a memory over flow, systems tend to crash and come to a halt.
Unwanted data on any web application website takes up large chunks of the memory. This eventually decreases the cache available for relevant and required data and causes the system to fail. Endurance tests help you filter out unwanted data and guard your memory cache.
The agility testing tool is the most comprehensive of all tools and checks all aspects of the application as a customer who is using it for the first time would. It analyzes what would exactly on the web application trigger customer satisfaction. This tool developed numerous acceptance tests through research of what the customer is looking for and simulates those situations on the application. In case of failures, the application is then rectified to please the customers as much as possible
This test entails the following principles:
1 Individual customer holds more importance than the processes involved. All processes will be worthless if the end user is not happy.
2 Although necessary documentation is essential, the software is what should function properly.
3 It is important to collaborate with the customer as that would give you the appropriate insights for creating testing situations.
4 Customer queries should be responded to as quickly as possible. This holds more importance that planning for future innovations.
Missing out on agile testing usually ends up developing software full of bugs and coding errors. Even if the web application is coded correctly, you wouldn’t know whether or not it would satisfy and please the customer. Agility testing tool allows you to not just achieve customer satisfaction but also customer delight.
The agility testing tool acts as a quality assurance tool for the web application. It checks each and every link from the customer’s perspective to confirm that every link is stable and functional. It creates various extra testing cycles entail new situations that a customers might face while using the application.
The customer situations are derived through comprehensive research. Surveys are initially conducted to find out usage patterns of web application users, what they like or dislike and also what is it about any web application that most satisfies them.
This tool involves application developers interacting and conversing with users and customers to find out what scenarios cause pleasure or displeasure. These scenarios are then converted into executable tests for checking the results on the web application.